*{
  padding: 0;
  margin: 0;
}
.nav{
  display: flex;
  align-items: center;
  background-color: tomato;
}
.nav li{
  list-style: none;
  padding: 10px;
  flex-grow: 1;
}
.nav li a{
  text-decoration: none;
}
.is-active{
  background-color: white;
}
.activeClass{
  background-color: yellowgreen;
}
